This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAID100X350, with the same bore, stroke, output force, port and mounting, so it fits the same application. The SAI replacement keeps the same ISO 15552 mounting interface, bore, stroke, output force and accessories, so it drops straight into existing fixtures. It is the current-production version of this cylinder with an upgraded piston seal.
Airtac SID Series Double-Rod Cylinder SID100X350
The AirTAC Airtac SID Series Double-Rod Cylinder SID100X350 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 350mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAID100X350, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke350 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAID100X350
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SID Series Double-Rod Cylinder SID100X350
The AirTAC SID100X350 is a double-acting, double-rod ISO 15552 cylinder where a rod exits both ends on one piston, ensuring push and pull force is equal both ways (3681 N at 0.5 MPa). The SID series is discontinued, but the SAID100X350 provides a direct replacement, keeping the same G1/2 port, M20x1.5 rod thread, and 3681 N force. The SAI family upgrades the piston seal to two Y-shaped one-way elements for lower start-up pressure and longer life.
With a 100 mm bore and 350 mm stroke, this SKU has no magnet (-S omitted), so it cannot take a magnetic switch. The dual-rod design prevents rotation and lets the back rod carry a sensor cam or drive a second tool. Note that air cushions only decelerate; for load holding on air loss, use an external rod lock or the SAIL/BSAI lock variant.
Airtac SID Series Double-Rod Cylinder SID100X350 Technical Specifications
| Model | Airtac SID Series Double-Rod Cylinder SID100X350 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAID100X350 |
| Bore size | Ø100 mm |
| Stroke | 350 mm |
| Acting type | Double acting |
| Port size | G1/2 |
| Rod thread | M20×1.5 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 800 mm/s |
| Cushion | Adjustable, 36 mm |
| Max standard stroke | Up to 1500 mm |
Specifications follow the official AirTAC SI datasheet (now discontinued). The SAID100X350 carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø100mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 3927 N | 3682 N |
| 0.7 MPa | 5498 N | — |
| Max (@1.0 MPa) | 801 kgf | |
The SAID100X350 produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SID Series Double-Rod Cylinder SID100X350
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×350 | Stroke length in mm. |
| -S | Optional built-in magnet for sensor position sensing. |
Legacy SI-family variants: SID (double rod), SIJ (adjustable stroke) — each maps to its SAI equivalent (SID→SAID, SIJ→SAIJ). Rod material: carbon steel (blank) / SUS420J2 (A) / SUS304 (B).
Where the Airtac SID Series Double-Rod Cylinder SID100X350 Is Used
Twin-Tool Workholding
Drives two opposing clamps or machining heads simultaneously from one piston, utilising the equal both-ways force to maintain perfectly balanced pressure on both sides of a workpiece.
Synchronized Transfer Arm
Indexing a conveyor load 350 mm forward while the rear rod simultaneously retracts a return cam, keeping the transfer cycle compact and mechanically locked in step.
Replacing the Airtac SID Series Double-Rod Cylinder SID100X350 with the SAID100X350
To replace the discontinued SID100X350, install the SAID100X350, which matches the ISO 15552 mounting interface, 350 mm stroke, and 3681 N equal-both-ways force. When sizing both ways, verify if neighbour bores (80 mm or 125 mm) offer a better footprint, but the 100 mm bore gives exact 3681 N symmetry. A double rod is right when you need anti-rotation stability or must drive two tools from one piston. Reuse FA, LB, or TC mounts. Because this SKU lacks the -S magnet, it cannot support sensing; add -S for CS1-B/DS1-B sensor accuracy. At 350 mm stroke, add external guides to prevent rod bending under side loads.
Replacement checklist
- ✓ Same ISO 15552 interface → SAID100X350
- ✓ Same bore / stroke / force
- ✓ Port/thread type (PT/G/NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Mounting reused (FA/FB/CA/CB/CR/LB/TC)
Airtac SID Series Double-Rod Cylinder SID100X350 FAQ
Yes, the SID100X350 is discontinued. The direct replacement is the SAID100X350. It shares the same ISO 15552 interface, 100 mm bore, 350 mm stroke, G1/2 port, and equal-both-ways force. The SAI family also adds SAIL and BSAI lock variants the SI line lacked.
Force is equal both ways at 3681 N @0.5 MPa, 5153 N @0.7 MPa, and 6626 N @0.9 MPa. Speed is 30-800 mm/s. It features a 25 mm rod, M20x1.5 thread, and 36 mm adjustable air cushions at each end. Cushions only decelerate; use an external rod lock for load holding.
Related AirTAC SAI Cylinders
Request a Quote for the SAID100X350
Send us the quantity and destination. We confirm price, stock and lead time on the SAID100X350 replacement — usually within 7-8 hours.